Răspuns :
A = {0, 2, 3, 6, 8, 9, 10, 12}
a) 2×0 =0, 2×1=2; 2×2=4; 2×3= 6; 2×4=8; 2×5=10, 2×6=12;
A={0, 2, 6, 8, 10, 12}
b) D₆ = {1, 2, 3, 6}
A= { 2, 3, 6 }
A = {0, 2, 3, 6, 8, 9, 10, 12}
a) 2×0 =0, 2×1=2; 2×2=4; 2×3= 6; 2×4=8; 2×5=10, 2×6=12;
A={0, 2, 6, 8, 10, 12}
b) D₆ = {1, 2, 3, 6}
A= { 2, 3, 6 }